Device for sawing quartered timber.



PATENTED APR. 23. 1907.

A. s. FROSILID. DEVICE FOR SAWING QUARTERBD TIMBER.

APPLICATION 2mm APR.30.1906.

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PATENTED APR. 23, 1907.

A. s, PROYSLID. DEVICE FOR SAWING QUARTERED TIMBER.

APPLICATION FILED APR .30,1906.

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PATENTEDAPRL23y1907. A. s. PROSLID. DEVICE-FOR SAWING QUARTERED TIMBER.

APPLICATION FILED APR.80,190B.

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0 9 3 2 R P A D E T N B m P E I L S U R n A DEVICE FOR SAWING QUARTEREDTIMBER.

APPLICATION FILED APR. 30, 1906.

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UNITED STATES PATENT OFFICE.

ANTON S. FROSLID, OF SEASIDE, OREGON, ASSIGNOR TO SEASIDE ELECTRICCOMPANY, OF SEASIDE, OREGON A CORPORATION OF OREGON.

Specification of Letters Patent.

Patented April 23, 1907.

Application filed April 30,1906. Serial No. 314.605.

T0 aZZ whom it may concern:

Be it known that I, ANTON S. FROSLID, a citizen of the United States,residing at Sea side, in the county of Olatsop and State of Oregon, haveinvented new and useful Improvements in Devices for Sawing QuarteredTimber, of which the following is a specification, reference being hadto the drawings which form a part thereof.

My invention relates to devices for sawing quartered timber in which thematerial is completely out in its passage with the mill carriage undersuccessive saw groups.

The object of my invention is to provide.

such a device in which Pacific Coast hemlock in particular may berapidly and economically sawed into boards or planks with the grainvertical or nearly vertical, better adapting it for use as flooring andwhich device will make practicable the use and marketing of wood whichcould not heretofore be employed for such purpose because of the want ofsuitable machinery to properly cut it and the value of which will beincreased by my machine. I attain these objects as well as otherpractical advantages, by the construction, combination and arrangementof parts illustrated in the accompanying drawings, which form a part ofthese specifications, in which Figure 1 is a plan view of the machine;Fig. 2 an end elevation; Fig. 3 a side elevation; Fig. 4 an endelevation of a log showing direction of cuts with relation to grain ofthe wood.

Like letters and numerals refer to like parts throughout the views.

The log-carriage A is of the ordinary kind used in saw-mills and isprovided with any suitable means commonly employed for the traveling ofsuch carriages backward and forward.

For the purpose of carrying quartered timber below and in engagementwith my saws as I arrange them, the carriage is provided with a rightangled tilting stay-log B pivotally mounted at its angle on the shaft 13extending longitudinally along the center line of the carriage andhaving tilting levers G G. The stay-log also has the dogs 6 as means forretaining the quartered timber E in place on the carriage for sawing. Atsuitable heights above the traveling plane of the carriage, inlongitudinal planes on opposite sides, are successive groups of verticalcircular saws O O and D D mounted on the arbors 7, 8, 9, 10 all of whichare operated by any suitable power transmitted to the pulleys 11 11, 1212 mounted in the hangers 30 Figs. 1, 2, 3. The group O of thesevertical saws is arranged to cut on the left of and in planes parallelwith the axis of the shaft 13 of the stay-log and nearest the startinglace of the carriage, the saw 31 of this group eing of such largerdiameter than the saw 32 as may be desired. On the same side, in aarallel plane and nearer the axis of the sha 't 13 of the stay-log andbeyond the first group of saws, is the group O the diameter of itsmember 33 being as much greater than the diameter of its member 34 asmay be desired and at least one of these saws being of a larger diameterthan either member of the first group. All saws of the groups C O are ofa diameter adapting them to cut the log to the proper depths for thefirst out.

On the right of and in planes parallel with the axis of the shaft 13 ofthe stay-log and in a position nearly opposite the saw group C is avertical saw group D, the saw 38 of which is of a diameter adapting itto cut the tilted quarter timber exactly to the depth of the kerf 29previously cut by the saw 32, the saw 37 being also of a diameter to cutto the depth of the kerf 28 of the saw 31 in the same manner. Nearer tothe starting place is a group of saws D on the same side, in planesnearer and parallel with the axis of the shaft 13 of the stay-log, andin a position nearly 0pposite the saw group C, at least one of themembers of which is larger in diameter than those of the group D, thesaw 36 being of a diameter adapting it to cut to the depth of the kerf26 previously cut by the saw 33, the saw 35 beng also of a diameteradapting it to cut through the log. The groups D D of the saws areoperated in reverse direction to that of the saws O C.

It is necessarily apparent that the quarter log being securely held bythe dogs on the carriage, the saws on the side where the first cuts aremade, may be arranged in any order desired, but on the o posite side, towhich the log is tilted after the first cuts, it is obvious that thesaws, beginning in order from nearest the return starting place of thecarriage, must cut consecutively from the out side, so that the logshall be held in place until all the upper boards are cut and may beremoved and the last one held in place until properly out.

Other changes or arrangements are possible without departure from thescope and principle of my invention. It is intended in all thearrangements that each group of saws shall be adapted to be operated ata speed calculated to accomplish proper and accurate cutting.

In Fig. 5 is shown an end View of a log and the manner in which it isintended the cuts shall be made with relation to the grain of the wood.Such a timber is first sawed in a separate machine being cut in halveson the lines shown by the kerfs 16, 17 and next in quarters on the linesof the kerfs 18, 19, 20, 21. The respective quarters are then sawed inmy device first on the lines of the kerfs 26, 27, 28, 29 and then on thelines of the kerfs 22, 23, 24, 25 in the manner already described.

It will now be seen that the quarter E of such a timber being placedupon the carriage and retained in secure position by the staylog B anddogs 6 the carriage A carrying the same is caused to travel forward inthe direction of the arrow X below the first group of saws C when thecuts 28, 29 are made and next the cuts 26, 27 are made by the succeedinggroup C. Then by means of one of the levers G G the quartered log asthus out, is tilted on thestay-log into the position E in dotted linesFig. 2 and the carriage is caused to travel in the direction of thearrow X on its return to the starting place. In doing so the log isfirst brought into engagement with the saws of the group D which cut tothe kerfs 28, 29, the log being next brought into engagement with thesaw group D, the saw 36 of which cuts to the kerf 26, and the saw 35through the log, the boards or planks thus sawed. out being then removedto the side. This completely cuts the quarter log into boards having aclear grain practically vertical and with the least possible waste ofthe material. This operation permits of the manufacture of material forflooring, from timber which it has heretofore been practicallyimpossible to obtain such product from,

and the sawing is done speedily and with the greatest economy of labor.The carriage having returned to the starting place the stay-log istilted into position to receive an other quarter timber and the circuitof the saws again made as before without any delay.

It will be seen further that in my arrangement of saws cutting a quartertimber as already described, one half of the total number only by sawsarranged in the manner of my invention is it possible to saw an entirequarter timber with the minimum of waste and with the carriage travelingonly once backward and forward to engagement with my saws. By thearrangement as shown in Fig. 5 the quarter may be completely sawed onone outward passage of the carriage but by this method more space isrequired, the horizontally placed saws cannot be so practically operatedandv the mill in that arrangement would not cut timber so economicallynor so accurately as in my preferred. arrangement.

Having thus described my invention I claim In a machine for sawingquartered logs, the combination between a right angled. stay-log orlogholder adapted to hold one quarter of the log, mounted upon atraveling log carriage and turning upon an axis fastened to said.carriage; and circular saws in any desired number mounted at suitableheights in vertical planes above said carriage, a portion I of thenumber of the saws being directly over the stay-log when one arm or sideof the staylog is in a horizontal position and the remaining portion ofthe number of the saws being directly over the stay-log when, after aturn of a quarter clrcle of the stay-log around the axis, th1s same arm18 1n -a vertical position,

and at least in one of these portions of the number of the saws the sawsbeing so mounted that the arbor carrying the saw or group of saws placedat the least height above the car riage shall be nearest the point wherethe carriage stops after finished trip and the arbor carrying the saw orgroup of saws placed at.

the greatest height above the carriage shall be farthest away from thispoint substantially as specified.

ANTON S. FROSLII). Witnesses:

ANDREW SwENsEN, JOHN BRANDT.

